This component provides a set of classes that help you to debug an application. It provides timers and report generators for different formats that give a summary of warnings and errors that occurred within your application.

The component allows you construct and/or parse Mail messages conforming to the mail standard. It has support for attachments, multipart messages and HTML mail. It also interfaces with SMTP to send mail or IMAP, POP3 or mbox to retrieve e-mail.

The main objective of the Reflection component is to enhance PHP by type information and annotations. It uses source code documentation to determine data types and other pieces of information provided via annotations. Those annotations can be used to realize systems which depend on strong type information or additional details about the source code itself.

A fully functional Templating system, supporting template compilation in different levels, user defined functions and operators, an optimizer, output escaping for different output handlers to prevent XSS and other security problems and a plug in system for extra functionality (such as a Translation system).

A component that reads XML translation definitions (the Qt Linguist format), supports caching of translation contexts and presents you with a class to apply translations to strings. A filter system allows you to transform translation definitions for special use.